What is the catched exception when StorageFolder::GetFolderAsync() fails (C++)?

Question

I want to have a sub folder of application data for my app storage. In App::OnLaunched, I do this :

 

try {
	create_task(localFolder->GetFolderAsync(L"anyname")).then([this](StorageFolder^ f) { 
		m_dlyfolder = f; 
	});
}
catch(...)
{
	try {
		create_task(localFolder->CreateFolderAsync(L"anyname")).then([this](StorageFolder^ f){ 
			m_dlyfolder = f; 
		});
	}
	catch(...)
	{
		String^ msg = e->Message;
		OutputDebugString(msg->Data());
	}
};

It works well, creating the subfolder on first run and getting it on the next sessions.

I would like to check which exceptions I get when CreateFolderAsync or GetFolderAsync fails, and it's not an Exception^.

What should I put in the catch() instead of "..."?